Paul Gottschling 6c9eb01dc2 Add a guide to deploying an HA cluster (#19217) ...

* Add a guide to deploying an HA cluster

Closes #16751

This is a general guide that prefaces our HA deployment guides.

Also adds an introduction to the "deploy-a-cluster" section.

* Respond to some PR feedback

- Add mentions of specific services (Auth and Proxy) where it would help
  with clarity.
- Edit port tables to remove ports that shouldn't be publicly exposed.
- Clarify the supported backends.
- Clarify that Let's Encrypt is not required for TLS credential
  management.

* Respond to more PR feedback

- Add context around DNS records
- Use "Layer 4" instead of "Layer Four"
- Explain optional ports more explicitly
- Fix spacing issues
- Indicate that you can use an S3-compatible object store
- Clarify cert-fetching behavior for applications
- Describe separate port configs depending on whether TLS Routing is
  enabled, and add a brief section re: whether to enable TLS Routing
- Expand the Teleport configuration section to accommodate TLS Routing
  and separate listeners

* Add more context to the "Deploy a Cluster" intro

* Small language tweaks

* Add an image

* Respond to zmb3 feedback

- Use "cluster state backend" and "session recording backend"
- Mention cross-zone load balancing
- Link to the Backends Reference instead of including example backend
  configurations
- Use v3 for example configs
- Fix example config indentation

* Add CTA for Teleport Cloud and forScopes

2022-12-21 13:46:16 +00:00

..

teleport-ha-architecture.png

Add a guide to deploying an HA cluster (#19217)

2022-12-21 13:46:16 +00:00